It's B. Macavity, Macavity, there’s no one like Macavity(A)
, He’s broken every human law, he breask the law of gravity,(A, cause it rhymes with Macavity)
His powers of levitation would make a fakir stare,(B, it doesn't rhyme with either word labeled "A")
And when you reach the scene of crime—Macavity’s not there!(B it rhymes with the first on labeled "B")
You may seek him in the basement, you may look up in the air(B, blah blah labeled "B")— But I tell you once and once again, Macavity’s not there!(B cause rhyming things is fun)